巴基斯坦采购需求：垂直轴风力涡轮机

We're looking to procure a vertical wind turbine system for our factory setup. The complete package should include not just the wind turbine, but also an inverter and assistance with the installation process. We're interested in evaluating options for different power outputs, specifically 5 kW, 10 kW, 15 kW, and 20 kW systems. Please provide us with detailed technical specifications for each capacity along with a comprehensive commercial proposal. We're keen to understand the features, efficiency, and any additional components included in the packages. This information will be critical for us to make an informed decision on our renewable energy investment.